For a Medicare-enrolled hospital, start with the Centers for Medicare & Medicaid Services’ (CMS) Hospital All Owners dataset. It identifies reported owners and includes an owner-type field for private-equity companies. For a medical practice, first identify the exact legal business entity; federal clinician and NPI directories can help match names and locations, but they are not ownership registries. In either case, distinguish a record showing a direct owner from evidence establishing the provider’s current ultimate owner.
Start by identifying the exact provider
A familiar hospital or clinic name may be a brand or “doing business as” (DBA) name rather than the legal entity that owns or operates it. Before searching, collect the displayed name, street address, legal business name if known, and any available identifiers: a hospital’s CMS Certification Number (CCN), or a clinician’s or organization’s National Provider Identifier (NPI).
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For hospitals, CMS’s Hospital Enrollments dataset can help match a facility by legal business name, DBA, address, and Medicare enrollment information. For practices, use the NPPES NPI files to connect individual or organization names with other names and practice locations. CMS’s Doctors and Clinicians information is another identity aid for clinicians and groups listed on Medicare Care Compare.
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An NPI identifies a health-care provider for standard transactions; it does not establish ownership or validate licensure or credentialing. A clinician, clinic location, branded group, and entity receiving Medicare payments can all have different names. Resolve that identity before drawing conclusions about who owns the practice.
Check a hospital’s reported owners and transaction history
Review Hospital All Owners
- Search the Hospital All Owners dataset using the matched facility name and other identifying details.
- For each relevant owner row, note the organization name, owner type, address, and ownership effective date. The accompanying API documentation describes fields including “PRIVATE EQUITY COMPANY – OWNER,” investment firm, holding company, management-services company, and whether an owner is itself owned by another organization or individual.
- Follow any ownership-chain indication. A direct owner may be a holding company or another entity rather than the private-equity firm a reader is trying to identify.
CMS says the information is gathered from PECOS, the Medicare enrollment system, and states: “The hospital ownership information is self-reported by the entity.” The dataset page showed records through May 2026 and a monthly update schedule when checked. A PE-company flag is useful evidence of a reported classification, but a blank or unmarked field does not prove that no PE relationship exists: reporting, classification, entity matching, or the visible corporate chain may be incomplete.
Look for a reported change of ownership
Search CMS’s Hospital Change of Ownership dataset for the facility and any related identifiers. It can show the reported buyer, seller, transaction type, and effective date for changes on or after January 1, 2016. CMS cautions that some providers may not be displayed, and the information is self-reported. The dataset page showed Q1 2026 as the latest data and quarterly updates when checked. If the facility has multiple NPIs, check the additional identifiers as well.
A missing transaction entry is not proof that no acquisition took place. Likewise, an older transaction establishes a reported event at that time, not necessarily the current owner.
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Trace a medical practice’s ownership through records
The federal sources above can help identify a practice and its clinicians, but they do not provide one comprehensive lookup for private-equity ownership of every medical practice. Once you have the exact legal entity, search its name—and names of any parent, holding, or management company—in the relevant state business registry and health-care regulator or facility-licensing records.
- Use NPPES other-name and practice-location information, plus CMS Doctors and Clinicians where relevant, to connect the practice’s brand and address to its legal entity.
- Search the exact legal name and likely parent or management-company names in state business and health-care regulator records. Compare addresses, filing details, and dates rather than relying on a similar name alone.
- Look for the practice’s own ownership disclosures and dated acquisition announcements. Treat an announcement as evidence of the announced transaction, and check whether later records establish that the ownership remains current.
- If the chain is unclear, ask the practice for its legal owner and parent organization, or ask the relevant state regulator where ownership or licensing filings can be inspected.
Record availability and completeness vary by jurisdiction; no single federal source settles every state’s process. A management-services company’s involvement may be relevant to control or operations, but its presence alone does not establish who holds the equity.
Use Open Payments only for the question it answers
CMS Open Payments is not a general private-equity ownership finder. Its ownership or investment-interest category concerns interests held by physicians or immediate family members in reporting entities. CMS says that category does not apply to non-physician practitioner or teaching-hospital covered recipients. A physician-owner or investor entry may help identify a relationship, but it does not by itself show that a practice is owned by private equity.
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- Pages: 384
- Publication Date: 2017-11-21
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Compare the evidence before stating who owns the provider
| What to compare | What to record | Why it matters |
|---|---|---|
| Identity | Legal name, DBA, address, NPI, and CCN where applicable | Helps avoid confusing a facility, practice group, clinician, or similarly named company. |
| Ownership layer | Direct owner, parent, holding company, management-services company, and any identified ultimate firm | Operational or management relationships are not necessarily the same as equity ownership. |
| Evidence type | CMS owner record, CMS transaction, state filing, provider disclosure, or dated acquisition announcement | These records serve different purposes and have different limits. |
| Date | Record update date, effective date, transaction date, or filing date | A past acquisition does not, by itself, establish current ownership. |
| Classification | Explicit CMS PE flag, identified firm, or an inference from corporate records | Keeps a reported category distinct from your interpretation of a corporate chain. |
| Completeness | Whether the record is self-reported, may omit providers, or depends on state-specific filings | Prevents one record from being treated as a complete ownership map. |
State exactly what the records establish
When sharing a conclusion, name the source, the record or transaction date, and the ownership layer it identifies. “CMS lists [entity] as a direct owner in a record effective [date]” is narrower and more precise than saying “the hospital is ultimately owned by [firm]” when the parent-company link is not established. Apply the same distinction to practices, and describe any unresolved link rather than treating an inference as a confirmed fact.
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